SY20212CAIC - 4A, 1.8MHz, I2C Programmable Buck


  • 2.6V to 5.5V Input Voltage Range
  • Fixed Frequency Operation: 1.8MHz
  • Low RDS(ON) for Internal Switches (Top/Bottom): 70mΩ/40mΩ
  • Programmable Output Voltage: 0.7625V to 1.55V in 12.5mV Steps
  • Default 1.05V Output Voltage
  • 4A Output Current Capability
  • Capable for 0.33µH Inductor and 22µF Ceramic Capacitor
  • PFM/PWM Operation for Optimum Increased Efficiency
  • OVP/OCP/UVLO/OTP Protections
  • RoHs Compliant and Halogen Free
  • Compact Package: TSOT23-8

Typical Application


SY20212C is a high efficiency 1.8MHz synchronous step down DC-DC regulator IC capable of delivering up to 4A output current. It can operate over a wide input voltage range from 2.6V to 5.5V and integrates main switch and synchronous switch with very low RDS (ON) to minimize the conduction loss. The output voltage can be programmed from 0.7625V to 1.55V through I2C interface.
SY20212C is available in TSOT23-8 package.


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